# STC SR02598SE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Kawak Aviation Technologies Inc, United States
- Description: Installation of a Kawak Aviation Technologies Model 41400 aerial liquid dispensing system
- Applied: March 1, 2017
- Status date: September 13, 2023
- Product: Aircraft, Rotorcraft
- Certification basis: Part 29
- Data sheets: [TCDS R0011DE](https://openairdocs.org/tcds/R0011DE), [TCDS R0015DE](https://openairdocs.org/tcds/R0015DE)
- Certificate PDF: https://openairdocs.org/files/sha256/ce/e8/cee84f5876dfcc62fb6810feb0b6368f99ffc84d51714d3ed2b12e4bce680b23
- Approved model list and other attachments: [SR02598SE_AML.pdf](https://openairdocs.org/files/sha256/07/50/075086ddfbbc04ffc00ab593ca58a3aa9e825d674e2b5b728ed48a024542f388)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID140654505120230921151542.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SR02598SE

## ADs that name it (0)

None.

## Approved models (2)

- Billings Flying Service Inc CH-47D ([TCDS R0011DE](https://openairdocs.org/tcds/R0011DE))
- Billings Flying Service, Inc. CH-47D ([TCDS R0015DE](https://openairdocs.org/tcds/R0015DE))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

(See Continuation Sheet Page 3 of 3 Pages) SR02598SE Kawak Aviation Technologies, Inc.

20690 Carmen Loop Road, Suite 102 Bend, OR 97702 Part 29 the Federal Aviation Regulations * Installation of a Kawak Aviation Technologies Model 41400 aerial liquid dispensing system. This system must be installed in accordance with Kawak Aviation Technologies Document KATI-IM-828, Revision A, dated April 25, 2018, or later FAA approved revision. Maintained in accordance with these Instructions for Continued Airworthiness Kawak Aviation Technologies Document KATI-MM-828, Revision C, dated April 10, 2023 or later FAA approved revision. Operated in accordance with FAA Approved Rotorcraft Flight Manual Supplement KATI-FM-828, Revision B, dated July 11, 2023, or later FAA approved revision.

Approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of this model series unless the installer determines that the relationship between this change and any other previously incorporated approved modifications will introduce no adverse effect upon the airworthiness of that aircraft.

March 1, 2017 May 21, 2018 September 13, 2023 for Manager, West Certification Branch *

*See attached Federal Aviation Administration (FAA) Approved Model List (AML) SR02598SE for approved aircraft Models and applicable airworthiness regulations.

SR02598SE

End SR02598SE Limitations and Conditions (continued):

A copy of this certificate, Instructions for Continued Airworthiness and FAA Approved Rotorcraft Flight Manual Supplement must be maintained as part of the permanent records for the modified aircraft.

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Certification Basis: The certification basis for this modification is in accordance with Type Certificate Data Sheet R0011DE Revision 6 and R0015DE Revision IR.

### SR02598SE_AML.pdf

FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR02598SE FOR Installation of Model 41400 Aerial Liquid Dispensing System ISSUE DATE: September 13, 2023

Page 1 of 1

**ITEM AIRCRAFT /**

**ROTORCRAFT MAKE**

**AIRCRAFT /**

**ROTORCRAFT MODEL**

**ORIGINAL TC NUMBER**

**CERTIFICATION**

**BASIS FOR**

**ALTERATION**

**FAA APPROVED**

**AIRCRAFT /**

**ROTORCRAFT FLIGHT**

**MANUAL SUPPLEMENT**

**FAA APPROVED**

MASTER DRAWING LIST AML REV DATE Number Revision* Drawing Revision*

1. Billings Flying Service, Inc.

CH-47D R0011DE 14 CFR 29 Amdt 20 KATI-FM-828 B 41400-000- MDL F 9-13-23

2. Billings Flying Service, Inc.

CH-47D R0015DE 14 CFR 29 Amdt 20 KATI-FM-828 B 41400-000- MDL F 9-13-23 * Or later FAA Approved Revision

FAA Approved:

for Manager, West Certification Branch AMENDED:

REISSUED:

## Every issue (2)

- September 13, 2023: Amended, Current. [certificate](https://openairdocs.org/files/sha256/ce/e8/cee84f5876dfcc62fb6810feb0b6368f99ffc84d51714d3ed2b12e4bce680b23), [SR02598SE_AML.pdf](https://openairdocs.org/files/sha256/07/50/075086ddfbbc04ffc00ab593ca58a3aa9e825d674e2b5b728ed48a024542f388)
- May 21, 2018: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/9f/6a/9f6aa67abe11af6613e3ab1474b8cfb95ae6c1b4545989efee67b3af0e6770f5)

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